<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
	var arr=[1,4,3,3,3,  7,6,4,6,9,5,8];
	//求和
	var sum=0;
	for(var x of arr){
		sum += x;
					
		}
	    document.write(sum);
				
				
					
			
</script>
</body>
</html>
